Othello, Yeonsoo Kim

I think Act 3 to 5 of Othello deals with the most dramatic point of climax throughout the story. As Shakespeare described the characters’ thought process so well and he followed each of them progressing their path in the story.
Also I wondered how Iago could be so evil when he spoke out this sentence, “I am your own forever” at the end of the Act 3. I don’t how can a person be so vicious and not mindful at all to other’s pain. Maybe the case is rare in the real world, but it still can emphasize the side of tragic flow in the story line very effectively.